121323130311 has 4 divisors (see below), whose sum is σ = 161764173752. Its totient is φ = 80882086872.

The previous prime is 121323130303. The next prime is 121323130339. The reversal of 121323130311 is 113031323121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113031323121 = 3 ⋅37677107707.

It is not a de Polignac number, because 121323130311 - 2³ = 121323130303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323130391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20220521716 + ... + 20220521721.

It is an arithmetic number, because the mean of its divisors is an integer number (40441043438).

Almost surely, 2^121323130311 is an apocalyptic number.

121323130311 is a deficient number, since it is larger than the sum of its proper divisors (40441043441).

121323130311 is an equidigital number, since it uses as much as digits as its factorization.

121323130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40441043440.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 121323130311 its reverse (113031323121), we get a palindrome (234354453432).

The spelling of 121323130311 in words is "one hundred twenty-one billion, three hundred twenty-three million, one hundred thirty thousand, three hundred eleven".